Fair Value Measurements Quantitiative Information about Level 3 Non-Recurring Assets (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified					9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012 Loans Receivable [Member] Weighted Average [Member] percent	Sep. 30, 2012 Loans Receivable [Member] Minimum [Member] percent	Sep. 30, 2012 Loans Receivable [Member] Maximum [Member] percent	Sep. 30, 2012 Other Real Estate Owned [Member] percent	Sep. 30, 2012 Other Real Estate Owned [Member] Weighted Average [Member] percent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Loans Receivable, Fair Value Disclosure	$ 20,230	[1]	$ 18,297	[2]
Other Real Estate Owned, Fair Value Disclosure	$ 379	[3]	$ 1,999	[4]
Fair Value Inputs, Discount Rate					8.00%	6.00%	13.00%
Fair Value Inputs, Comparability Adjustments					11.00%	0.00%	30.00%	8.00%	8.00%

[1] (1)Collateral-dependent impaired loans held at September 30, 2012 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2012.

[2] (1)Collateral-dependent impaired loans held at September 30, 2011 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2011.

[3] (2)One OREO property held at September 30, 2012 had a write-down during the first nine months of 2012.

[4] (2)Three OREO properties held at September 30, 2011 had write-downs during the first nine months of 2011.